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Diagne CA, Charbonnel N, Henttonen H, Sironen T, Brouat C. Serological Survey of Zoonotic Viruses in Invasive and Native Commensal Rodents in Senegal, West Africa. Vector Borne Zoonotic Dis 2017; 17:730-733. [PMID: 28873024 DOI: 10.1089/vbz.2017.2135] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Increasing studies on rodent-borne diseases still highlight the major role of rodents as reservoirs of numerous zoonoses of which the frequency is likely to increase worldwide as a result of accelerated anthropogenic changes, including biological invasions. Such a situation makes pathogen detection in rodent populations important, especially in the context of developing countries characterized by high infectious disease burden. Here, we used indirect fluorescent antibody tests to describe the circulation of potentially zoonotic viruses in both invasive (Mus musculus domesticus and Rattus rattus) and native (Mastomys erythroleucus and Mastomys natalensis) murine rodent populations in Senegal (West Africa). Of the 672 rodents tested, we reported 22 seropositive tests for Hantavirus, Orthopoxvirus, and Mammarenavirus genera, and no evidence of viral coinfection. This study is the first to report serological detection of Orthopoxvirus in rodents from Senegal, Mammarenavirus in R. rattus from Africa, and Hantavirus in M. m. domesticus and in M. erythroleucus. Further specific identification of the viral agents highlighted here is urgently needed for crucial public health concerns.
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Affiliation(s)
- Christophe A Diagne
- 1 CBGP, IRD, CIRAD, INRA, Montpellier SupAgro, University of Montpellier , Montpellier, France .,2 BIOPASS (IRD-CBGP, ISRA, UCAD), Dakar, Senegal .,3 Département de Biologie Animale, Faculté des Sciences et Techniques, Université Cheikh Anta Diop (UCAD) , Dakar, Senegal
| | - Nathalie Charbonnel
- 4 CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, University of Montpellier , Montpellier, France
| | - Heikki Henttonen
- 5 Forest and Animal Ecology, Natural Resources Institute Finland , Helsinki, Finland
| | - Tarja Sironen
- 6 Department of Virology, University of Helsinki , Helsinki, Finland
| | - Carine Brouat
- 1 CBGP, IRD, CIRAD, INRA, Montpellier SupAgro, University of Montpellier , Montpellier, France
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102
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Chen QZ, Luo F, Lu MX, Li N, Teng Y, Huang QL, Zhu N, Wang GY, Yue M, Zhang Y, Feng Y, Xiong HR, Hou W. HTNV-induced upregulation of miR-146a in HUVECs promotes viral infection by modulating pro-inflammatory cytokine release. Biochem Biophys Res Commun 2017; 493:807-813. [PMID: PMID: 28843856 DOI: 10.1016/j.bbrc.2017.08.073] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 08/19/2017] [Indexed: 10/19/2022]
Abstract
Increasing research has shown a link between viruses and miRNAs, such as miRNA-146a, in regulating virus infection and replication. In the current study, the association between miR-146a and hantaan virus (HTNV) infection in human umbilical vein endothelial cells (HUVECs) was investigated, with a focus on examining the expression of pro-inflammatory cytokines. The results showed that HTNV infection promoted the production of miR-146a in HUVECs and activated nuclear factor-κB (NF-κB) signaling, along with the upregulation of pro-inflammatory cytokines, including interleukin 8 (IL-8), C-C Motif Chemokine Ligand 5 (CCL5, also RANTES), interferon-inducible protein-10 (IP-10) and interferon beta (IFN-β). Moreover, miR-146a exhibited a negative regulatory effect on the NF-κB pathway. Accordingly, a miR-146a inhibitor increased the expression of IL-8, CCL5, IP-10 and IFN-β, whereas a miR-146a mimic reduced the levels of these cytokines. Consequently, exogenous transduction of miR-146a significantly enhanced HTNV replication in HUVEC cells. We also discovered that viral proteins (NP/GP) contributed to miR-146a expression via enhancement the activity of miR-146a promoter. In conclusion, these results imply the negative regulation of miR-146a on the production of HTNV-induced pro-inflammatory cytokines contributes to virus replication, which suggest that miR-146a may be regarded as a novel therapeutic target for HTNV infection.
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Affiliation(s)
- Qing-Zhou Chen
- State Key Laboratory of Virology, Institute of Medical Virology, Hubei Province Key Laboratory of Allergy and Immunology, School of Basic Medical Sciences, Wuhan University, 185 Donghu Road, Wuhan 430071, Hubei Province, China
| | - Fan Luo
- State Key Laboratory of Virology, Institute of Medical Virology, Hubei Province Key Laboratory of Allergy and Immunology, School of Basic Medical Sciences, Wuhan University, 185 Donghu Road, Wuhan 430071, Hubei Province, China
| | - Ming-Xiang Lu
- Center for Gene Diagnosis, Zhongnan Hospital, Wuhan University, 169 Donghu Road, Wuhan 430071, Hubei Province, China
| | - Ning Li
- State Key Laboratory of Virology, Institute of Medical Virology, Hubei Province Key Laboratory of Allergy and Immunology, School of Basic Medical Sciences, Wuhan University, 185 Donghu Road, Wuhan 430071, Hubei Province, China
| | - Yan Teng
- State Key Laboratory of Virology, Institute of Medical Virology, Hubei Province Key Laboratory of Allergy and Immunology, School of Basic Medical Sciences, Wuhan University, 185 Donghu Road, Wuhan 430071, Hubei Province, China
| | - Qiu-Ling Huang
- State Key Laboratory of Virology, Institute of Medical Virology, Hubei Province Key Laboratory of Allergy and Immunology, School of Basic Medical Sciences, Wuhan University, 185 Donghu Road, Wuhan 430071, Hubei Province, China
| | - Ni Zhu
- School of Basic Medicine, Hubei University of Science and Technology, No.88 Xianning Avenue, Xianning 437100, Hubei Province, China
| | - Guan-Yi Wang
- State Key Laboratory of Virology, Institute of Medical Virology, Hubei Province Key Laboratory of Allergy and Immunology, School of Basic Medical Sciences, Wuhan University, 185 Donghu Road, Wuhan 430071, Hubei Province, China
| | - Ming Yue
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, No.300 Guangzhou Road, Nanjing 210029, Jiangsu Province, China
| | - Yun Zhang
- Institute of Military Medical Sciences Nanjing Command, Nanjing 210002, Jiangsu Province, China
| | - Yong Feng
- State Key Laboratory of Virology, Institute of Medical Virology, Hubei Province Key Laboratory of Allergy and Immunology, School of Basic Medical Sciences, Wuhan University, 185 Donghu Road, Wuhan 430071, Hubei Province, China
| | - Hai-Rong Xiong
- State Key Laboratory of Virology, Institute of Medical Virology, Hubei Province Key Laboratory of Allergy and Immunology, School of Basic Medical Sciences, Wuhan University, 185 Donghu Road, Wuhan 430071, Hubei Province, China.
| | - Wei Hou
- State Key Laboratory of Virology, Institute of Medical Virology, Hubei Province Key Laboratory of Allergy and Immunology, School of Basic Medical Sciences, Wuhan University, 185 Donghu Road, Wuhan 430071, Hubei Province, China; School of Basic Medicine, Hubei University of Science and Technology, No.88 Xianning Avenue, Xianning 437100, Hubei Province, China.
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103
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First serological evidence of hantavirus among febrile patients in Mozambique. Int J Infect Dis 2017; 61:51-55. [DOI: 10.1016/j.ijid.2017.06.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 05/31/2017] [Accepted: 06/01/2017] [Indexed: 12/26/2022] Open
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104
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Szabó R, Radosa L, Ličková M, Sláviková M, Heroldová M, Stanko M, Pejčoch M, Osterberg A, Laenen L, Schex S, Ulrich RG, Essbauer S, Maes P, Klempa B. Phylogenetic analysis of Puumala virus strains from Central Europe highlights the need for a full-genome perspective on hantavirus evolution. Virus Genes 2017; 53:913-917. [PMID: 28664467 DOI: 10.1007/s11262-017-1484-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 06/21/2017] [Indexed: 11/25/2022]
Abstract
Puumala virus (PUUV), carried by bank voles (Myodes glareolus), is the medically most important hantavirus in Central and Western Europe. In this study, a total of 523 bank voles (408 from Germany, 72 from Slovakia, and 43 from Czech Republic) collected between the years 2007-2012 were analyzed for the presence of hantavirus RNA. Partial PUUV genome segment sequences were obtained from 51 voles. Phylogenetic analyses of all three genome segments showed that the newfound strains cluster with other Central and Western European PUUV strains. The new sequences from Šumava (Bohemian Forest), Czech Republic, are most closely related to the strains from the neighboring Bavarian Forest, a known hantavirus disease outbreak region. Interestingly, the Slovak strains clustered with the sequences from Bohemian and Bavarian Forests only in the M but not S segment analyses. This well-supported topological incongruence suggests a segment reassortment event or, as we analyzed only partial sequences, homologous recombination. Our data highlight the necessity of sequencing all three hantavirus genome segments and of a broader bank vole screening not only in recognized endemic foci but also in regions with no reported human hantavirus disease cases.
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Affiliation(s)
- Róbert Szabó
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
- Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
- Department of Biomedical Sciences, University of Cagliari, Monserrato, CA, Italy
| | - Lukáš Radosa
- Institute of Virology, Charité University Hospital, Helmut-Ruska-Haus, Berlin, Germany
- Department of Infectious Diseases, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Martina Ličková
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Monika Sláviková
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Marta Heroldová
- Department of Forest Ecology, Mendel University in Brno, Brno, Czech Republic
| | - Michal Stanko
- Institute of Parasitology, Slovak Academy of Sciences, Košice, Slovakia
| | - Milan Pejčoch
- National Institute of Public Health, Prague, Czech Republic
| | - Anja Osterberg
- Department of Virology & Rickettsiology, Bundeswehr Institute of Microbiology, Munich, Germany
| | - Lies Laenen
- Division of Clinical and Epidemiological Virology, Zoonotic Infectious Diseases Unit, KU Leuven, Rega Institute, Leuven, Belgium
| | - Susanne Schex
- Department of Virology & Rickettsiology, Bundeswehr Institute of Microbiology, Munich, Germany
| | - Rainer G Ulrich
- Institute for Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald-Insel Riems, Germany
| | - Sandra Essbauer
- Department of Virology & Rickettsiology, Bundeswehr Institute of Microbiology, Munich, Germany
| | - Piet Maes
- Division of Clinical and Epidemiological Virology, Zoonotic Infectious Diseases Unit, KU Leuven, Rega Institute, Leuven, Belgium
| | - Boris Klempa
- Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences, Bratislava, Slovakia.
- Institute of Virology, Charité University Hospital, Helmut-Ruska-Haus, Berlin, Germany.
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105
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Expansion of spatial and host range ofPuumalavirus in Sweden: an increasing threat for humans? Epidemiol Infect 2017; 145:1642-1648. [DOI: 10.1017/s0950268817000346] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
SUMMARYHantaviruses are globally distributed and cause severe human disease.Puumalahantavirus (PUUV) is the most common species in Northern Europe, and the only hantavirus confirmed to circulate in Sweden, restricted to the northern regions of the country. In this study, we aimed to further add to the natural ecology of PUUV in Sweden by investigating prevalence, and spatial and host species infection patterns. Specifically, we wanted to ascertain whether PUUV was present in the natural reservoir, the bank vole (Myodes glareolus) further south than Dalälven river, in south-central Sweden, and whether PUUV can be detected in other rodent species in addition to the natural reservoir. In total, 559 animals were collected at Grimsö (59°43′N; 15°28′E), Sala (59°55′N; 16°36′E) and Bogesund (59°24′N; 18°14′E) in south-central Sweden between May 2013 and November 2014. PUUV ELISA-reactive antibodies were found both in 2013 (22/295) and in 2014 (18/264), and nine samples were confirmed as PUUV-specific by focus reduction neutralization test. Most of the PUUV-specific samples were from the natural host, the bank vole, but also from other rodent hosts, indicating viral spill-over. Finally, we showed that PUUV is present in more highly populated central Sweden.
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106
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Reil D, Rosenfeld UM, Imholt C, Schmidt S, Ulrich RG, Eccard JA, Jacob J. Puumala hantavirus infections in bank vole populations: host and virus dynamics in Central Europe. BMC Ecol 2017; 17:9. [PMID: 28245831 PMCID: PMC5331674 DOI: 10.1186/s12898-017-0118-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 02/08/2017] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND In Europe, bank voles (Myodes glareolus) are widely distributed and can transmit Puumala virus (PUUV) to humans, which causes a mild to moderate form of haemorrhagic fever with renal syndrome, called nephropathia epidemica. Uncovering the link between host and virus dynamics can help to prevent human PUUV infections in the future. Bank voles were live trapped three times a year in 2010-2013 in three woodland plots in each of four regions in Germany. Bank vole population density was estimated and blood samples collected to detect PUUV specific antibodies. RESULTS We demonstrated that fluctuation of PUUV seroprevalence is dependent not only on multi-annual but also on seasonal dynamics of rodent host abundance. Moreover, PUUV infection might affect host fitness, because seropositive individuals survived better from spring to summer than uninfected bank voles. Individual space use was independent of PUUV infections. CONCLUSIONS Our study provides robust estimations of relevant patterns and processes of the dynamics of PUUV and its rodent host in Central Europe, which are highly important for the future development of predictive models for human hantavirus infection risk.
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Affiliation(s)
- Daniela Reil
- Institute for Plant Protection in Horticulture and Forests, Vertebrate Research, Julius Kühn-Institute, Toppheideweg 88, 48161 Muenster, Germany
- Institute of Biochemistry and Biology, Animal Ecology, University of Potsdam, Maulbeerallee 1, 14469 Potsdam, Germany
| | - Ulrike M. Rosenfeld
- Institute for Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Südufer 10, 17493 Greifswald-Insel Riems, Germany
| | - Christian Imholt
- Institute for Plant Protection in Horticulture and Forests, Vertebrate Research, Julius Kühn-Institute, Toppheideweg 88, 48161 Muenster, Germany
| | - Sabrina Schmidt
- Institute for Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Südufer 10, 17493 Greifswald-Insel Riems, Germany
| | - Rainer G. Ulrich
- Institute for Novel and Emerging Infectious Diseases, Friedrich-Loeffler-Institut, Südufer 10, 17493 Greifswald-Insel Riems, Germany
| | - Jana A. Eccard
- Institute of Biochemistry and Biology, Animal Ecology, University of Potsdam, Maulbeerallee 1, 14469 Potsdam, Germany
| | - Jens Jacob
- Institute for Plant Protection in Horticulture and Forests, Vertebrate Research, Julius Kühn-Institute, Toppheideweg 88, 48161 Muenster, Germany
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107
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No JS, Kim WK, Kim JA, Lee SH, Lee SY, Kim JH, Kho JH, Lee D, Song DH, Gu SH, Jeong ST, Kim HC, Klein TA, Song JW. Detection of Hantaan virus RNA from anti-Hantaan virus IgG seronegative rodents in an area of high endemicity in Republic of Korea. Microbiol Immunol 2017; 60:268-71. [PMID: 26917012 DOI: 10.1111/1348-0421.12370] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 02/04/2016] [Accepted: 02/21/2016] [Indexed: 01/08/2023]
Abstract
Hantaan virus (HTNV), of the family Bunyaviridae, causes hemorrhagic fever with renal syndrome (HFRS) in humans. Although the majority of epidemiologic studies have found that rodents are seropositive for hantavirus-specific immunoglobulin, the discovery of hantavirus RNA in seronegative hosts has led to an investigation of the presence of HTNV RNA in rodents captured in HFRS endemic areas. HTNV RNA was detected in seven (3.8%) of 186 anti-HTNV IgG seronegative rodents in Republic of Korea (ROK) during 2013-2014. RT-qPCR for HTNV RNA revealed dynamic virus-host interactions of HTNV in areas of high endemicity, providing important insights into the epidemiology of hantaviruses.
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Affiliation(s)
- Jin Sun No
- Department of Microbiology, College of Medicine, Korea University, Seoul, 02841
| | - Won-Keun Kim
- Department of Microbiology, College of Medicine, Korea University, Seoul, 02841
| | - Jeong-Ah Kim
- Department of Microbiology, College of Medicine, Korea University, Seoul, 02841
| | - Seung-Ho Lee
- Department of Microbiology, College of Medicine, Korea University, Seoul, 02841
| | - Sook-Young Lee
- Department of Microbiology, College of Medicine, Korea University, Seoul, 02841
| | - Ji Hye Kim
- Department of Microbiology, College of Medicine, Korea University, Seoul, 02841
| | - Jeong Hoon Kho
- Department of Microbiology, College of Medicine, Korea University, Seoul, 02841
| | - Daesang Lee
- Fifth Research and Development Institute, Agency of Defense Development, Yuseong P.O. Box 35, Daejeon, Korea, 34186
| | - Dong Hyun Song
- Fifth Research and Development Institute, Agency of Defense Development, Yuseong P.O. Box 35, Daejeon, Korea, 34186
| | - Se Hun Gu
- Fifth Research and Development Institute, Agency of Defense Development, Yuseong P.O. Box 35, Daejeon, Korea, 34186
| | - Seong Tae Jeong
- Fifth Research and Development Institute, Agency of Defense Development, Yuseong P.O. Box 35, Daejeon, Korea, 34186
| | - Heung-Chul Kim
- Fifth Medical Detachment, 168th Multifunctional Medical Battalion, 65th Medical Brigade, Unit 15247, APO AP, 96205-5247
| | - Terry A Klein
- Public Health Command District-Korea (Provisional), 65th Medical Brigade, Unit 15281, APO AP, 96205-5281, USA
| | - Jin-Won Song
- Department of Microbiology, College of Medicine, Korea University, Seoul, 02841
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108
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Hantavirus retinitis and concurrent hemorrhagic fever with renal syndrome. Can J Ophthalmol 2017; 52:e41-e44. [PMID: 28237172 DOI: 10.1016/j.jcjo.2016.09.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Revised: 09/16/2016] [Accepted: 09/26/2016] [Indexed: 11/21/2022]
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109
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Dennehy JJ. Evolutionary ecology of virus emergence. Ann N Y Acad Sci 2016; 1389:124-146. [PMID: 28036113 PMCID: PMC7167663 DOI: 10.1111/nyas.13304] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Revised: 10/24/2016] [Accepted: 11/09/2016] [Indexed: 12/22/2022]
Abstract
The cross-species transmission of viruses into new host populations, termed virus emergence, is a significant issue in public health, agriculture, wildlife management, and related fields. Virus emergence requires overlap between host populations, alterations in virus genetics to permit infection of new hosts, and adaptation to novel hosts such that between-host transmission is sustainable, all of which are the purview of the fields of ecology and evolution. A firm understanding of the ecology of viruses and how they evolve is required for understanding how and why viruses emerge. In this paper, I address the evolutionary mechanisms of virus emergence and how they relate to virus ecology. I argue that, while virus acquisition of the ability to infect new hosts is not difficult, limited evolutionary trajectories to sustained virus between-host transmission and the combined effects of mutational meltdown, bottlenecking, demographic stochasticity, density dependence, and genetic erosion in ecological sinks limit most emergence events to dead-end spillover infections. Despite the relative rarity of pandemic emerging viruses, the potential of viruses to search evolutionary space and find means to spread epidemically and the consequences of pandemic viruses that do emerge necessitate sustained attention to virus research, surveillance, prophylaxis, and treatment.
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Affiliation(s)
- John J Dennehy
- Biology Department, Queens College of the City University of New York, Queens, New York and The Graduate Center of the City University of New York, New York, New York
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110
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Kalaiselvan S, Sankar S, Ramamurthy M, Ghosh AR, Nandagopal B, Sridharan G. Prediction of B Cell Epitopes Among Hantavirus Strains Causing Hemorragic Fever With Renal Syndrome. J Cell Biochem 2016; 118:1182-1188. [PMID: 27748540 DOI: 10.1002/jcb.25765] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 10/14/2016] [Indexed: 11/10/2022]
Abstract
Hantavirus infections are now recognized to be a global problem. The hantaviruses include several genotypic variants of the virus with different distributions in varying geographical regions. The virus genotypes seem to segregate in association with certain manifestations specific for each syndrome. They primarily include HFRS, HCPS, febrile illness with or without mild involvement of renal diseases. In the course of our study on hantavirus etiology of febrile illnesses, we recovered a hantavirus strain identified by nPCR. This has been sequenced to be Hantaan-like virus (partial S segment). The current manuscript is focused on understanding the N protein coded by S segment in terms of variation of amino acid sequences of the virus genotypes associated with HFRS. The diagnosis of this infection is achieved by PCR testing of serum/plasma or demonstration of IgM/IgG in serum. The limitations of PCR are temporal often not positive after 7 days of onset of infection. IgM detection is possible around this period and up to 21 days. IgG detection is less definitive in acute infections. Here, we report characterization of the sequence diversity of HFRS strains, 3D structure of Hantaan N protein, and B-cell epitopes on this molecule. We predicted a 20 amino acid sequence length peptide by using BepiPred online server in IEDB analysis resource program. We suggest this peptide may be used for development of geographic region-specific immunoassays like EIAs for antibody detection, monoclonal antibody development, and immunoblots (line immunoassay). J. Cell. Biochem. 118: 1182-1188, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Sagadevan Kalaiselvan
- Sri Sakthi Amma Institute of Biomedical Research, Sri Narayani Hospital and Research Centre, Sripuram, Vellore, 632 055, Tamil Nadu, India
| | - Sathish Sankar
- Sri Sakthi Amma Institute of Biomedical Research, Sri Narayani Hospital and Research Centre, Sripuram, Vellore, 632 055, Tamil Nadu, India
| | - Mageshbabu Ramamurthy
- Sri Sakthi Amma Institute of Biomedical Research, Sri Narayani Hospital and Research Centre, Sripuram, Vellore, 632 055, Tamil Nadu, India
| | - Asit Ranjan Ghosh
- Centre for Infectious Diseases & Control, School of Biosciences and Technology, VIT University, Vellore, 632 014, Tamil Nadu, India
| | - Balaji Nandagopal
- Sri Sakthi Amma Institute of Biomedical Research, Sri Narayani Hospital and Research Centre, Sripuram, Vellore, 632 055, Tamil Nadu, India
| | - Gopalan Sridharan
- Sri Sakthi Amma Institute of Biomedical Research, Sri Narayani Hospital and Research Centre, Sripuram, Vellore, 632 055, Tamil Nadu, India
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111
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Mechanistic Insight into Bunyavirus-Induced Membrane Fusion from Structure-Function Analyses of the Hantavirus Envelope Glycoprotein Gc. PLoS Pathog 2016; 12:e1005813. [PMID: 27783711 PMCID: PMC5082683 DOI: 10.1371/journal.ppat.1005813] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 07/17/2016] [Indexed: 01/03/2023] Open
Abstract
Hantaviruses are zoonotic viruses transmitted to humans by persistently infected rodents, giving rise to serious outbreaks of hemorrhagic fever with renal syndrome (HFRS) or of hantavirus pulmonary syndrome (HPS), depending on the virus, which are associated with high case fatality rates. There is only limited knowledge about the organization of the viral particles and in particular, about the hantavirus membrane fusion glycoprotein Gc, the function of which is essential for virus entry. We describe here the X-ray structures of Gc from Hantaan virus, the type species hantavirus and responsible for HFRS, both in its neutral pH, monomeric pre-fusion conformation, and in its acidic pH, trimeric post-fusion form. The structures confirm the prediction that Gc is a class II fusion protein, containing the characteristic β-sheet rich domains termed I, II and III as initially identified in the fusion proteins of arboviruses such as alpha- and flaviviruses. The structures also show a number of features of Gc that are distinct from arbovirus class II proteins. In particular, hantavirus Gc inserts residues from three different loops into the target membrane to drive fusion, as confirmed functionally by structure-guided mutagenesis on the HPS-inducing Andes virus, instead of having a single "fusion loop". We further show that the membrane interacting region of Gc becomes structured only at acidic pH via a set of polar and electrostatic interactions. Furthermore, the structure reveals that hantavirus Gc has an additional N-terminal "tail" that is crucial in stabilizing the post-fusion trimer, accompanying the swapping of domain III in the quaternary arrangement of the trimer as compared to the standard class II fusion proteins. The mechanistic understandings derived from these data are likely to provide a unique handle for devising treatments against these human pathogens.
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112
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DNA Microarray Platform for Detection and Surveillance of Viruses Transmitted by Small Mammals and Arthropods. PLoS Negl Trop Dis 2016; 10:e0005017. [PMID: 27654806 PMCID: PMC5031435 DOI: 10.1371/journal.pntd.0005017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 08/31/2016] [Indexed: 01/06/2023] Open
Abstract
Viruses transmitted by small mammals and arthropods serve as global threats to humans. Most emergent and re-emergent viral agents are transmitted by these groups; therefore, the development of high-throughput screening methods for the detection and surveillance of such viruses is of great interest. In this study, we describe a DNA microarray platform that can be used for screening all viruses transmitted by small mammals and arthropods (SMAvirusChip) with nucleotide sequences that have been deposited in the GenBank. SMAvirusChip was designed with more than 15,000 oligonucleotide probes (60-mers), including viral and control probes. Two SMAvirusChip versions were designed: SMAvirusChip v1 contains 4209 viral probes for the detection of 409 viruses, while SMAvirusChip v2 contains 4943 probes for the detection of 416 viruses. SMAvirusChip was evaluated with 20 laboratory reference-strain viruses. These viruses could be specifically detected when alone in a sample or when artificially mixed within a single sample. The sensitivity of SMAvirusChip was evaluated using 10-fold serial dilutions of dengue virus (DENV). The results showed a detection limit as low as 2.6E3 RNA copies/mL. Additionally, the sensitivity was one log10 lower (2.6E2 RNA copies/mL) than quantitative real-time RT-PCR and sufficient to detect viral genomes in clinical samples. The detection of DENV in serum samples of DENV-infected patients (n = 6) and in a whole blood sample spiked with DENV confirmed the applicability of SMAvirusChip for the detection of viruses in clinical samples. In addition, in a pool of mosquito samples spiked with DENV, the virus was also detectable. SMAvirusChip was able to specifically detect viruses in cell cultures, serum samples, total blood samples and a pool of mosquitoes, confirming that cellular RNA/DNA did not interfere with the assay. Therefore, SMAvirusChip may represent an innovative surveillance method for the rapid identification of viruses transmitted by small mammals and arthropods.
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113
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Heinemann P, Tia M, Alabi A, Anon JC, Auste B, Essbauer S, Gnionsahe A, Kigninlman H, Klempa B, Kraef C, Kruger N, Leendertz FH, Ndhatz-Sanogo M, Schaumburg F, Witkowski PT, Akoua-Koffi CG, Kruger DH. Human Infections by Non-Rodent-Associated Hantaviruses in Africa. J Infect Dis 2016; 214:1507-1511. [PMID: 27601619 DOI: 10.1093/infdis/jiw401] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 08/22/2016] [Indexed: 12/24/2022] Open
Abstract
Various hantaviruses have been discovered in unconventional hosts (shrews and bats) in Africa. Up to now, it was unknown whether these viruses pose a threat for human health. In this study, using newly established serological assays, we demonstrated evidence of shrew-borne hantavirus infections in humans from Côte d'Ivoire and Gabon.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Boris Klempa
- Charité Medical School.,Biomedical Research Center, Bratislava, Slovakia
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114
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Abstract
Bats are hosts of a range of viruses, including ebolaviruses, and many important human viral infections, such as measles and mumps, may have their ancestry traced back to bats. Here, I review viruses of all viral families detected in global bat populations. The viral diversity in bats is substantial, and viruses with all known types of genomic structures and replication strategies have been discovered in bats. However, the discovery of viruses is not geographically even, with some apparently undersampled regions, such as South America. Furthermore, some bat families, including those with global or wide distributions such as Emballonuridae and Miniopteridae, are underrepresented on viral databases. Future studies, including those that address these sampling gaps along with those that develop our understanding of viral-host relationships, are highlighted.
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Affiliation(s)
- David T S Hayman
- Molecular Epidemiology and Public Health Laboratory, Infectious Disease Research Centre, Hopkirk Research Institute, Massey University, Palmerston North 4442, New Zealand;
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115
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Papa A, Vaheri A, LeDuc JW, Krüger DH, Avšič-Županc T, Arikawa J, Song JW, Markotić A, Clement J, Liang M, Li D, Yashina LN, Jonsson CB, Schmaljohn CS. Meeting report: Tenth International Conference on Hantaviruses. Antiviral Res 2016; 133:234-41. [PMID: 27544703 DOI: 10.1016/j.antiviral.2016.08.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 08/14/2016] [Indexed: 12/17/2022]
Abstract
The 10th International Conference on Hantaviruses, organized by the International Society on Hantaviruses, was held from May 31-June 3, 2016 at Colorado State University, Fort Collins, CO, USA. These conferences have been held every three years since 1980. The current report summarizes research presented on all aspects of hantavirology: ecology and epidemiology, virus replication, phylogeny, pathogenesis, immune response, clinical studies, vaccines and therapeutics.
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Affiliation(s)
- Anna Papa
- Department of Microbiology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece.
| | - Antti Vaheri
- Department of Virology, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - James W LeDuc
- Galveston National Laboratory, University of Texas Medical Branch, Galveston, TX, USA
| | - Detlev H Krüger
- Institute of Medical Virology, University Hospital Charité, Berlin, Germany
| | - Tatjana Avšič-Županc
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Jiro Arikawa
- Department of Microbiology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Jin-Won Song
- Department of Microbiology, College of Medicine, Korea University, Seoul, South Korea
| | - Alemka Markotić
- Research Department, University Hospital for Infectious Diseases "Dr. Fran Mihaljevic", Zagreb, Croatia
| | - Jan Clement
- Laboratory of Clinical and Epidemiological Virology and Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
| | - Mifang Liang
- National Institute for Viral Disease Control and Prevention, China CDC, Beijing, China
| | - Dexin Li
- National Institute for Viral Disease Control and Prevention, China CDC, Beijing, China
| | - Liudmila N Yashina
- State Research Center of Virology and Biotechnology "Vector", Koltsovo, Russia
| | - Colleen B Jonsson
- Department of Microbiology, University of Tennessee-Knoxville, Knoxville, TN, USA
| | - Connie S Schmaljohn
- United States Army Medical Research Institute of Infectious Diseases, Fort Detrick, MD, USA
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116
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Kruger DH, Tkachenko EA, Morozov VG, Yunicheva YV, Pilikova OM, Malkin G, Ishmukhametov AA, Heinemann P, Witkowski PT, Klempa B, Dzagurova TK. Life-Threatening Sochi Virus Infections, Russia. Emerg Infect Dis 2016; 21:2204-8. [PMID: 26584463 PMCID: PMC4672424 DOI: 10.3201/eid2112.150891] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Sochi virus was recently identified as a new hantavirus genotype carried by the Black Sea field mouse, Apodemus ponticus. We evaluated 62 patients in Russia with Sochi virus infection. Most clinical cases were severe, and the case-fatality rate was as high as 14.5%.
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117
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Barriga GP, Villalón-Letelier F, Márquez CL, Bignon EA, Acuña R, Ross BH, Monasterio O, Mardones GA, Vidal SE, Tischler ND. Inhibition of the Hantavirus Fusion Process by Predicted Domain III and Stem Peptides from Glycoprotein Gc. PLoS Negl Trop Dis 2016; 10:e0004799. [PMID: 27414047 PMCID: PMC4945073 DOI: 10.1371/journal.pntd.0004799] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 06/02/2016] [Indexed: 12/17/2022] Open
Abstract
Hantaviruses can cause hantavirus pulmonary syndrome or hemorrhagic fever with renal syndrome in humans. To enter cells, hantaviruses fuse their envelope membrane with host cell membranes. Previously, we have shown that the Gc envelope glycoprotein is the viral fusion protein sharing characteristics with class II fusion proteins. The ectodomain of class II fusion proteins is composed of three domains connected by a stem region to a transmembrane anchor in the viral envelope. These fusion proteins can be inhibited through exogenous fusion protein fragments spanning domain III (DIII) and the stem region. Such fragments are thought to interact with the core of the fusion protein trimer during the transition from its pre-fusion to its post-fusion conformation. Based on our previous homology model structure for Gc from Andes hantavirus (ANDV), here we predicted and generated recombinant DIII and stem peptides to test whether these fragments inhibit hantavirus membrane fusion and cell entry. Recombinant ANDV DIII was soluble, presented disulfide bridges and beta-sheet secondary structure, supporting the in silico model. Using DIII and the C-terminal part of the stem region, the infection of cells by ANDV was blocked up to 60% when fusion of ANDV occurred within the endosomal route, and up to 95% when fusion occurred with the plasma membrane. Furthermore, the fragments impaired ANDV glycoprotein-mediated cell-cell fusion, and cross-inhibited the fusion mediated by the glycoproteins from Puumala virus (PUUV). The Gc fragments interfered in ANDV cell entry by preventing membrane hemifusion and pore formation, retaining Gc in a non-resistant homotrimer stage, as described for DIII and stem peptide inhibitors of class II fusion proteins. Collectively, our results demonstrate that hantavirus Gc shares not only structural, but also mechanistic similarity with class II viral fusion proteins, and will hopefully help in developing novel therapeutic strategies against hantaviruses. The infection of cells by enveloped viruses involves the fusion of membranes between viruses and cells. This process is mediated by viral fusion proteins that have been grouped into at least three structural classes. Membrane-enveloped hantaviruses are worldwide spread pathogens that can cause human disease with mortality rates reaching up to 50%, however, neither a therapeutic drug nor preventive measures are currently available. Here we show that the entrance of Andes hantavirus into target cells can be blocked by fragments derived from the Gc fusion protein that are analogous to inhibitory fragments of class II fusion proteins. The Gc fragments acted directly over the viral fusion process, preventing its late stages. Together, our data demonstrate that the hantavirus Gc protein shares not only structural, but also mechanistic similarity with class II fusion proteins, suggesting its evolution from a common or related ancestral fusion protein. Furthermore, the results outline novel approaches for therapeutic intervention.
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Affiliation(s)
- Gonzalo P. Barriga
- Molecular Virology Laboratory, Fundación Ciencia & Vida, Santiago, Chile
| | | | - Chantal L. Márquez
- Molecular Virology Laboratory, Fundación Ciencia & Vida, Santiago, Chile
| | - Eduardo A. Bignon
- Molecular Virology Laboratory, Fundación Ciencia & Vida, Santiago, Chile
| | - Rodrigo Acuña
- Molecular Virology Laboratory, Fundación Ciencia & Vida, Santiago, Chile
| | - Breyan H. Ross
- Laboratory of Structural Cell Biology, Department of Physiology, and Center for Interdisciplinary Studies of the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile
| | - Octavio Monasterio
- Laboratorio de Biología Estructural y Molecular, Facultad de Ciencias, Universidad de Chile, Santiago, Chile
| | - Gonzalo A. Mardones
- Laboratory of Structural Cell Biology, Department of Physiology, and Center for Interdisciplinary Studies of the Nervous System (CISNe), Universidad Austral de Chile, Valdivia, Chile
| | - Simon E. Vidal
- Molecular Virology Laboratory, Fundación Ciencia & Vida, Santiago, Chile
| | - Nicole D. Tischler
- Molecular Virology Laboratory, Fundación Ciencia & Vida, Santiago, Chile
- * E-mail:
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118
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Witkowski PT, Drexler JF, Kallies R, Ličková M, Bokorová S, Mananga GD, Szemes T, Leroy EM, Krüger DH, Drosten C, Klempa B. Phylogenetic analysis of a newfound bat-borne hantavirus supports a laurasiatherian host association for ancestral mammalian hantaviruses. INFECTION GENETICS AND EVOLUTION 2016; 41:113-119. [DOI: 10.1016/j.meegid.2016.03.036] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 03/21/2016] [Accepted: 03/31/2016] [Indexed: 11/27/2022]
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119
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Kim JA, Kim WK, No JS, Lee SH, Lee SY, Kim JH, Kho JH, Lee D, Song DH, Gu SH, Jeong ST, Park MS, Kim HC, Klein TA, Song JW. Genetic Diversity and Reassortment of Hantaan Virus Tripartite RNA Genomes in Nature, the Republic of Korea. PLoS Negl Trop Dis 2016; 10:e0004650. [PMID: 27315053 PMCID: PMC4912082 DOI: 10.1371/journal.pntd.0004650] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 03/30/2016] [Indexed: 11/19/2022] Open
Abstract
Background Hantaan virus (HTNV), a negative sense tripartite RNA virus of the Family Bunyaviridae, is the most prevalent hantavirus in the Republic of Korea (ROK). It is the causative agent of Hemorrhagic Fever with Renal Syndrome (HFRS) in humans and maintained in the striped field mouse, Apodemus agrarius, the primary zoonotic host. Clinical HFRS cases have been reported commonly in HFRS-endemic areas of Gyeonggi province. Recently, the death of a member of the ROK military from Gangwon province due to HFRS prompted an investigation of the epidemiology and distribution of hantaviruses in Gangwon and Gyeonggi provinces that border the demilitarized zone separating North and South Korea. Methodology and Principal Findings To elucidate the geographic distribution and molecular diversity of HTNV, whole genome sequences of HTNV Large (L), Medium (M), and Small (S) segments were acquired from lung tissues of A. agrarius captured from 2003–2014. Consistent with the clinical incidence of HFRS established by the Korea Centers for Disease Control & Prevention (KCDC), the prevalence of HTNV in naturally infected mice in Gangwon province was lower than for Gyeonggi province. Whole genomic sequences of 34 HTNV strains were identified and a phylogenetic analysis showed geographic diversity of the virus in the limited areas. Reassortment analysis first suggested an occurrence of genetic exchange of HTNV genomes in nature, ROK. Conclusion/Significance This study is the first report to demonstrate the molecular prevalence of HTNV in Gangwon province. Whole genome sequencing of HTNV showed well-supported geographic lineages and the molecular diversity in the northern region of ROK due to a natural reassortment of HTNV genomes. These observations contribute to a better understanding of the genetic diversity and molecular evolution of hantaviruses. Also, the full-length of HTNV tripartite genomes will provide a database for phylogeographic analysis of spatial and temporal outbreaks of hantavirus infection. Hemorrhagic Fever with Renal Syndrome (HFRS) and Hantavirus Pulmonary Syndrome (HPS) are endemic zoonotic infectious diseases caused by hantaviruses that belong to the Family Bunyaviridae containing negative-sense tripartite RNA genomes. Hantaviruses pose a critical emerging public health threat, with up to 200,000 clinical cases reported annually worldwide with 1–36% case fatality rates. In humans, hantavirus-borne diseases are contracted by the inhalation of viruses aerosolized from rodent excreta. However, there is no effective therapeutic or vaccine to prevent from the disease. Whole genome sequences of Hantaan virus (HTNV) were acquired from lung tissues of Apodemus agrarius captured in HFRS-endemic areas of the Republic of Korea (ROK). Phylogenetic analyses demonstrated that sequences of the HTNV tripartite genomes clustered geographically, showing broad diversity of HTNV throughout the areas surveyed. Reassortment analysis first suggested a natural occurrence of the HTNV genetic exchange in the ROK. These observations contribute to a better understanding of the genetic diversity and molecular evolution of hantaviruses in HFRS-endemic regions. The complete sequences of HTNV genomes will provide a database for the phylogeographic analysis and surveillance of endemic hantavirus-borne diseases.
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Affiliation(s)
- Jeong-Ah Kim
- Department of Microbiology, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Won-keun Kim
- Department of Microbiology, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Jin Sun No
- Department of Microbiology, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Seung-Ho Lee
- Department of Microbiology, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Sook-Young Lee
- Department of Microbiology, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Ji Hye Kim
- Department of Microbiology, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Jeong Hoon Kho
- Department of Microbiology, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Daesang Lee
- Agency for Defense Development, Yuseong-gu, Daejeon, Republic of Korea
| | - Dong Hyun Song
- Agency for Defense Development, Yuseong-gu, Daejeon, Republic of Korea
| | - Se Hun Gu
- Agency for Defense Development, Yuseong-gu, Daejeon, Republic of Korea
| | - Seong Tae Jeong
- Agency for Defense Development, Yuseong-gu, Daejeon, Republic of Korea
| | - Man-Seong Park
- Department of Microbiology, College of Medicine, Institute for Viral Diseases, Korea University, Seoul, Republic of Korea
| | - Heung-Chul Kim
- 168th Multifunctional Medical Battalion, 65th Medical Brigade, Unit 15247, 5th Medical Detachment, Yongsan Army Garrison, Seoul, Republic of Korea
| | - Terry A. Klein
- 65th Medical Brigade, Unit 15281, Public Health Command District-Korea, Yongsan Army Garrison, Seoul, Republic of Korea
| | - Jin-Won Song
- Department of Microbiology, College of Medicine, Korea University, Seoul, Republic of Korea
- * E-mail:
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120
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Möncke-Buchner E, Szczepek M, Bokelmann M, Heinemann P, Raftery MJ, Krüger DH, Reuter M. Sin Nombre hantavirus nucleocapsid protein exhibits a metal-dependent DNA-specific endonucleolytic activity. Virology 2016; 496:67-76. [PMID: 27261891 DOI: 10.1016/j.virol.2016.05.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 05/10/2016] [Accepted: 05/12/2016] [Indexed: 01/09/2023]
Abstract
We demonstrate that the nucleocapsid protein of Sin Nombre hantavirus (SNV-N) has a DNA-specific endonuclease activity. Upon incubation of SNV-N with DNA in the presence of magnesium or manganese, we observed DNA digestion in sequence-unspecific manner. In contrast, RNA was not affected under the same conditions. Moreover, pre-treatment of SNV-N with RNase before DNA cleavage increased the endonucleolytic activity. Structure-based protein fold prediction using known structures from the PDB database revealed that Asp residues in positions 88 and 103 of SNV-N show sequence similarity with the active site of the restriction endonuclease HindIII. Crystal structure of HindIII predicts that residues Asp93 and Asp108 are essential for coordination of the metal ions required for HindIII DNA cleavage. Therefore, we hypothesized that homologous residues in SNV-N, Asp88 and Asp103, may have a similar function. Replacing Asp88 and Asp103 by alanine led to an SNV-N protein almost completely abrogated for endonuclease activity.
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Affiliation(s)
- Elisabeth Möncke-Buchner
- Institute of Medical Virology, Helmut-Ruska-Haus, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Michal Szczepek
- Institute of Medical Physics and Biophysics, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Marcel Bokelmann
- Institute of Medical Virology, Helmut-Ruska-Haus, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Patrick Heinemann
- Institute of Medical Virology, Helmut-Ruska-Haus, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Martin J Raftery
- Institute of Medical Virology, Helmut-Ruska-Haus, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Detlev H Krüger
- Institute of Medical Virology, Helmut-Ruska-Haus, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany
| | - Monika Reuter
- Institute of Medical Virology, Helmut-Ruska-Haus, Charité - Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany.
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121
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Witkowski PT, Bourquain D, Bankov K, Auste B, Dabrowski PW, Nitsche A, Krüger DH, Schaade L. Infection of human airway epithelial cells by different subtypes of Dobrava-Belgrade virus reveals gene expression patterns corresponding to their virulence potential. Virology 2016; 493:189-201. [PMID: 27058765 DOI: 10.1016/j.virol.2016.03.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 03/23/2016] [Accepted: 03/24/2016] [Indexed: 10/22/2022]
Abstract
Dobrava-Belgrade virus (DOBV) is a pathogen causing hemorrhagic fever with renal syndrome in Europe. Virulence and case fatality rate are associated with virus genotype; however the reasons for these differences are not well understood. In this work we present virus-specific effects on the gene expression profiles of human lung epithelial cells (A549) infected with different genotypes of DOBV (Dobrava, Kurkino, and Sochi), as well as the low-virulent Tula virus (TULV). The data was collected by whole-genome gene expression microarrays and confirmed by quantitative real-time PCR. Despite their close genetic relationship, the expression profiles induced by infection with different hantaviruses are significantly varying. Major differences were observed in regulation of immune response genes, which were especially induced by highly virulent DOBV genotypes Dobrava and Sochi in contrast to less virulent DOBV-Kurkino and TULV. This work gives first insights into the differences of virus - host interactions of DOBV on genotype level.
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Affiliation(s)
- Peter T Witkowski
- Institute of Virology, Helmut-Ruska-Haus, Charité Medical School, Charitéplatz 1, 10117 Berlin, Germany.
| | | | - Katrin Bankov
- Robert Koch Institute, Nordufer 20, 13353 Berlin, Germany
| | - Brita Auste
- Institute of Virology, Helmut-Ruska-Haus, Charité Medical School, Charitéplatz 1, 10117 Berlin, Germany
| | | | | | - Detlev H Krüger
- Institute of Virology, Helmut-Ruska-Haus, Charité Medical School, Charitéplatz 1, 10117 Berlin, Germany
| | - Lars Schaade
- Robert Koch Institute, Nordufer 20, 13353 Berlin, Germany
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122
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Liu YY, Chen LJ, Zhong Y, Shen MX, Ma N, Liu BY, Luo F, Hou W, Yang ZQ, Xiong HR. Specific interference shRNA-expressing plasmids inhibit Hantaan virus infection in vitro and in vivo. Acta Pharmacol Sin 2016; 37:497-504. [PMID: 26972493 PMCID: PMC4820803 DOI: 10.1038/aps.2015.165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 12/15/2015] [Indexed: 01/28/2023] Open
Abstract
AIM To investigate the antiviral effects of vectors expressing specific short hairpin RNAs (shRNAs) against Hantaan virus (HTNV) infection in vitro and in vivo. METHODS Based on the effects of 4 shRNAs targeting different regions of HTNV genomic RNA on viral replication, the most effective RNA interference fragments of the S and M genes were constructed in pSilencer-3.0-H1 vectors, and designated pSilencer-S and pSilencer-M, respectively. The antiviral effect of pSilencer-S/M against HTNV was evaluated in both HTNV-infected Vero-E6 cells and mice. RESULTS In HTNV-infected Vero-E6 cells, pSilencer-S and pSilencer-M targeted the viral nucleocapsid proteins and envelope glycoproteins, respectively, as revealed in the immunofluorescence assay. Transfection with pSilencer-S or pSilencer-M (1, 2, 4 μg) markedly inhibited the viral antigen expression in dose- and time-dependent manners. Transfection with either plasmid (2 μg) significantly decreased HTNV-RNA level at 3 day postinfectin (dpi) and the progeny virus titer at 5 dpi. In mice infected with lethal doses of HTNV, intraperitoneal injection of pSilencer-S or pSilencer-M (30 μg) considerably increased the survival rates and mean time to death, and significantly reduced the mean virus yields and viral RNA level, and alleviated virus-induced pathological lesions in lungs, brains and kidneys. CONCLUSION Plasmid-based shRNAs potently inhibit HTNV replication in vitro and in vivo. Our results provide a basis for development of shRNA as therapeutics for HTNV infections in humans.
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123
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Filippone C, Castel G, Murri S, Beaulieux F, Ermonval M, Jallet C, Wise EL, Ellis RJ, Marston DA, McElhinney LM, Fooks AR, Desvars A, Halos LG, Vourc'h G, Marianneau P, Tordo N. Discovery of hantavirus circulating among Rattus rattus in French Mayotte island, Indian Ocean. J Gen Virol 2016; 97:1060-1065. [PMID: 26932442 DOI: 10.1099/jgv.0.000440] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Hantaviruses are emerging zoonotic viruses that cause human diseases. In this study, sera from 642 mammals from La Réunion and Mayotte islands (Indian Ocean) were screened for the presence of hantaviruses by molecular analysis. None of the mammals from La Réunion island was positive, but hantavirus genomic RNA was discovered in 29/160 (18 %) Rattus rattus from Mayotte island. The nucleoprotein coding region was sequenced from the liver and spleen of all positive individuals allowing epidemiological and intra-strain variability analyses. Phylogenetic analysis based on complete coding genomic sequences showed that this Murinae-associated hantavirus is a new variant of Thailand virus. Further studies are needed to investigate hantaviruses in rodent hosts and in Haemorrhagic Fever with Renal Syndrome (HFRS) human cases.
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Affiliation(s)
- Claudia Filippone
- Institut Pasteur, Unité des Stratégies Antivirales, F-75015, Paris, France
| | - Guillaume Castel
- INRA, UMR 1062 CBGP, F-34988 Montferrier-sur-Lez, France and Institut de Biologie Computationnelle, 34095 Montpellier, France
| | - Séverine Murri
- Anses-Laboratoire de Lyon, Unité de Virologie, Lyon, France
| | | | - Myriam Ermonval
- Institut Pasteur, Unité des Stratégies Antivirales, F-75015, Paris, France
| | - Corinne Jallet
- Institut Pasteur, Unité des Stratégies Antivirales, F-75015, Paris, France
| | - Emma L Wise
- Wildlife Zoonoses and Vector-borne Diseases Research Group, Animal and Plant Health Agency, Woodham Lane, New Haw, Surrey, KT15 3NB, UK
| | - Richard J Ellis
- Wildlife Zoonoses and Vector-borne Diseases Research Group, Animal and Plant Health Agency, Woodham Lane, New Haw, Surrey, KT15 3NB, UK
| | - Denise A Marston
- Wildlife Zoonoses and Vector-borne Diseases Research Group, Animal and Plant Health Agency, Woodham Lane, New Haw, Surrey, KT15 3NB, UK
| | - Lorraine M McElhinney
- Wildlife Zoonoses and Vector-borne Diseases Research Group, Animal and Plant Health Agency, Woodham Lane, New Haw, Surrey, KT15 3NB, UK.,Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, UK
| | - Anthony R Fooks
- Wildlife Zoonoses and Vector-borne Diseases Research Group, Animal and Plant Health Agency, Woodham Lane, New Haw, Surrey, KT15 3NB, UK.,Department of Clinical Infection, Microbiology and Immunology, University of Liverpool, Liverpool, UK
| | - Amélie Desvars
- UR346 Animal Epidemiology, INRA, Saint Genès Champanelle, France
| | | | - Gwenaël Vourc'h
- UR346 Animal Epidemiology, INRA, Saint Genès Champanelle, France
| | | | - Noël Tordo
- Institut Pasteur, Unité des Stratégies Antivirales, F-75015, Paris, France
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124
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Haemorrhagic fever with renal syndrome: literature review and distribution analysis in China. Int J Infect Dis 2016; 43:95-100. [DOI: 10.1016/j.ijid.2016.01.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 01/05/2016] [Accepted: 01/05/2016] [Indexed: 01/07/2023] Open
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125
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Laine O, Joutsi-Korhonen L, Lassila R, Koski T, Huhtala H, Vaheri A, Mäkelä S, Mustonen J. Hantavirus infection-induced thrombocytopenia triggers increased production but associates with impaired aggregation of platelets except for collagen. Thromb Res 2015; 136:1126-32. [PMID: 26462407 DOI: 10.1016/j.thromres.2015.10.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 09/20/2015] [Accepted: 10/04/2015] [Indexed: 01/20/2023]
Abstract
INTRODUCTION We evaluated the mechanisms of thrombocytopenia encountered in hantavirus disease by studying platelet production together with platelet aggregation and deposition to collagen surface. PATIENTS AND METHODS The study group consisted of 31 prospectively recruited, consecutive, hospitalized patients having acute Puumala hantavirus infection. Blood samples were collected acutely and at the control visit and subjected to analysis in Sysmex® XE-5000 to capture mean platelet volume (MPV) and immature platelet fraction (IPF%). Platelet aggregation under low shear rate conditions was assessed with impedance aggregometry Multiplate®, whereas platelet function analyzer (PFA)-100® was applied under blood flow of high shear forces. RESULTS IPF% was 3.1-fold higher acutely compared with the control (median 7.4%, range 2.0-23.8% vs. median 2.4%, range 1.4%-5.2%, p<0.001) tightly associating with the low platelet count (r=-0.76, p<0.001). Accordingly, acute MPV was high (median 11.4f l, range 9.4-13.1 fl vs. median 10.5 fl, range 9.0-12.0 fl, p=0.003). Acute platelet aggregation in Multiplate® was decreased to all agonists compared with the later control (p<0.05 for all agonists). Aggregation capacity associated with thrombocytopenia (for all agonists r ≥ 0.81, p<0.001), but impaired aggregation occurred also among patients with a nearly normal platelet count. Triggered by collagen, 20% of values were below reference range, while 73% of responses were low with thrombin receptor activating peptide. Significantly, under high shear platelet deposition to collagen surface was normal despite thrombocytopenia. CONCLUSIONS During acute hantavirus disease, platelet aggregation is impaired especially when induced with thrombin. Platelet adhesive mechanisms on collagen are intact despite thrombocytopenia while thrombopoiesis is active.
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Affiliation(s)
- Outi Laine
- Department of Internal Medicine, Tampere University Hospital, PO Box 2000, 33521 Tampere, Finland; School of Medicine, University of Tampere, 33014 Tampere, Finland.
| | - Lotta Joutsi-Korhonen
- Coagulation Disorders Unit, Clinical Chemistry, HUSLAB Laboratory Services, Helsinki University Hospital, PO Box 372, 00029 Helsinki, Finland.
| | - Riitta Lassila
- Coagulation Disorders Unit, Department of Hematology, Comprehensive Cancer Center, Helsinki University, and Helsinki University Hospital, PO Box 372, 00029 Helsinki, Finland.
| | - Tomi Koski
- Fimlab Medical Laboratories, Tampere University Hospital, PO Box 66, 33101 Tampere, Finland.
| | - Heini Huhtala
- School of Health Sciences, University of Tampere, 33014 Tampere, Finland.
| | - Antti Vaheri
- Department of Virology, Faculty of Medicine, University of Helsinki, PO Box 21, 00014 Helsinki, Finland.
| | - Satu Mäkelä
- Department of Internal Medicine, Tampere University Hospital, PO Box 2000, 33521 Tampere, Finland.
| | - Jukka Mustonen
- Department of Internal Medicine, Tampere University Hospital, PO Box 2000, 33521 Tampere, Finland; School of Medicine, University of Tampere, 33014 Tampere, Finland.
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Goeijenbier M, Aron G, Anfasa F, Lundkvist Å, Verner-Carlsson J, Reusken CBEM, Martina BEE, van Gorp ECM, Resida L. Emerging Viruses in the Republic of Suriname: Retrospective and Prospective Study into Chikungunya Circulation and Suspicion of Human Hantavirus Infections, 2008-2012 and 2014. Vector Borne Zoonotic Dis 2015; 15:611-8. [PMID: 26393384 DOI: 10.1089/vbz.2015.1798] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Suriname is a country on the northeastern Atlantic coast of South America. It is unique in the sense that different ethnic cultures live together within the country, resulting in high levels of transport of both humans and products between the Asian, African, and European continents as well as the Caribbean. Travel is only one of the many factors present in Suriname contributing to the risk for the emergence or introduction of any infectious disease. Recently, circulation of both chikungunya virus (CHIKV) and hantavirus was reported in areas neighboring Suriname. Here we report a retrospective and prospective study into chikungunya and hantavirus circulation. METHODS A chikungunya and hantavirus retrospective serological study was conducted on samples submitted for dengue, leptospirosis, and/or influenza virus diagnostics between 2008 and 2012 to the Bureau of Public Health in Suriname. This was followed by a prospective CHIKV serological and molecular surveillance study until the detection of the first autochthonous CHIKV cases in Suriname in May and June of 2014. RESULTS None of the tested samples showed the presence of CHIKV antibodies in the retrospective serological study. Prospective testing of CHIKV-suspected patients resulted in the detection of the first autochthonous CHIKV cases in Suriname in May, 2015. In one sample, we were able to isolate and sequence the virus. Retrospective testing for the presence of hantavirus antibodies showed a relative high response in both pan-hantavirus enzyme-linked immunosorbent assay (ELISA) and immunofluorescence assay (IFA). However, neutralization tests did not yield any evidence for infection with either Seoul or Andes hantavirus. CONCLUSION Here we report the presence of CHIKV in the republic of Suriname and the first serological indication of hantavirus infections in symptomatic patients.
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Affiliation(s)
| | - Georgina Aron
- 1 Erasmus MC , Viroscience department, Rotterdam, The Netherlands
| | - Fatih Anfasa
- 1 Erasmus MC , Viroscience department, Rotterdam, The Netherlands .,2 Faculty of Medicine, University of Indonesia , Jakarta, Indonesia
| | - Åke Lundkvist
- 3 Department of Medical Biochemistry and Microbiology, Zoonoses Science Centre, Uppsala University , Sweden .,4 Public Health Agency of Sweden , Solna, Sweden
| | - Jenny Verner-Carlsson
- 3 Department of Medical Biochemistry and Microbiology, Zoonoses Science Centre, Uppsala University , Sweden .,4 Public Health Agency of Sweden , Solna, Sweden
| | | | - Byron E E Martina
- 1 Erasmus MC , Viroscience department, Rotterdam, The Netherlands .,5 ARTEMIS One Health Research Institute , Utrecht, The Netherlands
| | | | - Lesley Resida
- 6 Bureau of Public Health (BOG) , Paramaribo, Suriname
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Evaluation of lipase levels in patients with nephropathia epidemica--no evidence for acute pancreatitis. BMC Infect Dis 2015. [PMID: 26204892 PMCID: PMC4513752 DOI: 10.1186/s12879-015-1031-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND The most common causative agent for hemorrhagic fever with renal syndrome in Germany is Puumala virus (PUUV) and a high percentage of patients with PUUV infection have gastrointestinal (GI) symptoms. The aim of the present study was to determine the prevalence of increased lipase levels and acute pancreatitis during nephropathia epidemica (NE) in 166 patients from Germany. METHODS Clinical and laboratory data during the acute phase of the disease were obtained from medical reports and files from 456 patients during acute hantavirus infection. Patients in whom serum lipase levels were determined during acute course of the disease were included in the study. RESULTS Lipase levels at the time of diagnosis were determined in 166 of the 456 NE patients (36%). Of the 166 patients, 25 (15%) had elevated lipase levels at the time of admission to hospital or first contact with general practitioner/nephrologist. In total 7 patients had a threefold increased serum lipase above the normal range. Abdominal pain was not more often present in the group of patients with elevated serum lipase compared to the lipase-negative group (9/25 vs 58/141). Abdominal ultrasound and CT scans revealed no signs of pancreatitis in any of the patients. Patients with elevated serum lipase had higher serum creatinine peak levels (p = 0.03) during the course of the disease. CONCLUSIONS Elevated lipase levels were common in our patient cohort and might reflect a more severe form of NE. NE does not lead to acute pancreatitis.
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Drebot MA. Emerging mosquito-borne bunyaviruses in Canada. CANADA COMMUNICABLE DISEASE REPORT = RELEVE DES MALADIES TRANSMISSIBLES AU CANADA 2015; 41:117-123. [PMID: 29769943 PMCID: PMC5864308 DOI: 10.14745/ccdr.v41i06a01] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
California serogroup and Cache Valley viruses are arboviruses (tick- and mosquito-borne pathogens) belonging to the genus Orthobunyavirus (Family Bunyaviridae). Although the majority of exposures to these viruses result in asymptomatic or mild infections, both California serogroup and Cache Valley viruses can cause febrile and neurological diseases similar in nature to those associated with infections by West Nile virus. California serogroup and Cache Valley viruses are widely distributed across North America and circulate in a number of vertebrate hosts and mosquito vectors, including several species of Aedes and other non-Culex mosquitoes. The Jamestown Canyon and snowshoe hare viruses are the most common kind of California serogroup viruses found in Canada and have been identified throughout the country. These potential pathogens may be contributing to a higher burden of illness than previously recognized and should be considered as part of the differential diagnosis for febrile and neuroinvasive disease during the mosquito season. Diagnosis can be made by requesting a diagnostic panel at the Viral Zoonoses program at the National Microbiology Laboratory. To decrease the risk of infection, education about these viruses and the importance of personal preventive measures is warranted.
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Affiliation(s)
- M A Drebot
- National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB
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129
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Hantavirus pulmonary syndrome in Canada: An overview of clinical features, diagnostics, epidemiology and prevention. ACTA ACUST UNITED AC 2015; 41:124-131. [PMID: 29769944 DOI: 10.14745/ccdr.v41i06a02] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hantavirus pulmonary syndrome is a disease caused by the inhalation of excreta from infected deer mice. In Canada, the majority of hantavirus pulmonary syndrome cases occur in the western provinces of British Columbia, Alberta, Saskatchewan and Manitoba and the primary cause of the illness is the Sin Nombre virus. Only one case of hantavirus pulmonary syndrome has been documented in eastern Canada (Québec); however, Sin Nombre virus-infected deer mice have been identified across the country. Although cases are rare (yearly case numbers range from zero to 13 and the total number of confirmed cases in Canada now total 109), the mortality rate among infected individuals is approximately 30%. The majority of cases occur in the spring and early summer indicating seasonally-associated risk factors for viral exposure. In 2013 and 2014, a substantial increase in the number of hantavirus pulmonary syndrome cases was identified; however the cause remains unclear. No antivirals or vaccines are currently available and treatment is supportive. Public education, rodent control and the use of personal protective measures are key to avoid infections in at-risk populations.
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Witkowski PT, Leendertz SAJ, Auste B, Akoua-Koffi C, Schubert G, Klempa B, Muyembe-Tamfum JJ, Karhemere S, Leendertz FH, Krüger DH. Human seroprevalence indicating hantavirus infections in tropical rainforests of Côte d'Ivoire and Democratic Republic of Congo. Front Microbiol 2015; 6:518. [PMID: 26052326 PMCID: PMC4439549 DOI: 10.3389/fmicb.2015.00518] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 05/09/2015] [Indexed: 12/01/2022] Open
Abstract
Hantaviruses are members of the Bunyaviridae family carried by small mammals and causing human hemorrhagic fevers worldwide. In Western Africa, where a variety of hemorrhagic fever viruses occurs, indigenous hantaviruses have been molecularly found in animal reservoirs such as rodents, shrews, and bats since 2006. To investigate the human contact to hantaviruses carried by these hosts and to assess the public health relevance of hantaviruses for humans living in the tropical rainforest regions of Western and Central Africa, we performed a cross-sectional seroprevalence study in the region of Taï National Park in Côte d’Ivoire and the Bandundu region near the Salonga National Park in the Democratic Republic (DR) of Congo. Serum samples were initially screened with enzyme-linked immunosorbent assays using nucleoproteins of several hantaviruses as diagnostic antigens. Positive results were confirmed by Western blotting and immunofluorescence testing. Seroprevalence rates of 3.9% (27/687) and 2.4% (7/295), respectively, were found in the investigated regions in Côte d’Ivoire and the DR Congo. In Côte d’Ivoire, this value was significantly higher than the seroprevalence rates previously reported from the neighboring country Guinea as well as from South Africa. Our study indicates an exposure of humans to hantaviruses in West and Central African tropical rainforest areas. In order to pinpoint the possible existence and frequency of clinical disease caused by hantaviruses in this region of the world, systematic investigations of patients with fever and renal or respiratory symptoms are required.
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Affiliation(s)
- Peter T Witkowski
- Institute of Virology, Helmut-Ruska-Haus, Charité Medical School Berlin, Germany
| | - Siv A J Leendertz
- P3 - Epidemiology of Highly Pathogenic Viruses, Robert Koch Institute Berlin, Germany
| | - Brita Auste
- Institute of Virology, Helmut-Ruska-Haus, Charité Medical School Berlin, Germany
| | | | - Grit Schubert
- P3 - Epidemiology of Highly Pathogenic Viruses, Robert Koch Institute Berlin, Germany
| | - Boris Klempa
- Institute of Virology, Helmut-Ruska-Haus, Charité Medical School Berlin, Germany ; Institute of Virology, Slovak Academy of Sciences Bratislava, Slovakia
| | | | - Stomy Karhemere
- National Institute of Biomedical Research Kinshasa, Democratic Republic of Congo
| | - Fabian H Leendertz
- P3 - Epidemiology of Highly Pathogenic Viruses, Robert Koch Institute Berlin, Germany
| | - Detlev H Krüger
- Institute of Virology, Helmut-Ruska-Haus, Charité Medical School Berlin, Germany
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Schönrich G, Krüger DH, Raftery MJ. Hantavirus-induced disruption of the endothelial barrier: neutrophils are on the payroll. Front Microbiol 2015; 6:222. [PMID: 25859243 PMCID: PMC4373389 DOI: 10.3389/fmicb.2015.00222] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2014] [Accepted: 03/05/2015] [Indexed: 12/13/2022] Open
Abstract
Viral hemorrhagic fever caused by hantaviruses is an emerging infectious disease for which suitable treatments are not available. In order to improve this situation a better understanding of hantaviral pathogenesis is urgently required. Hantaviruses infect endothelial cell layers in vitro without causing any cytopathogenic effect and without increasing permeability. This implies that the mechanisms underlying vascular hyperpermeability in hantavirus-associated disease are more complex and that immune mechanisms play an important role. In this review we highlight the latest developments in hantavirus-induced immunopathogenesis. A possible contribution of neutrophils has been neglected so far. For this reason, we place special emphasis on the pathogenic role of neutrophils in disrupting the endothelial barrier.
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Affiliation(s)
- Günther Schönrich
- Institute of Medical Virology, Helmut-Ruska-Haus, Charité-Universitätsmedizin Berlin , Berlin, Germany
| | - Detlev H Krüger
- Institute of Medical Virology, Helmut-Ruska-Haus, Charité-Universitätsmedizin Berlin , Berlin, Germany
| | - Martin J Raftery
- Institute of Medical Virology, Helmut-Ruska-Haus, Charité-Universitätsmedizin Berlin , Berlin, Germany
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Witkowski PT, Heinemann P, Klempa B, Krüger DH. Molekulare Identifikation von Hantaviren in neuen Wirten. BIOSPEKTRUM : ZEITSCHRIFT DER GESELLSCHAFT FUR BIOLOGISHE CHEMIE (GBCH) UND DER VEREINIGUNG FUR ALLGEMEINE UND ANGEWANDTE MIKROBIOLOGIE (VAAM) 2015; 21:503-506. [PMID: 32218646 PMCID: PMC7090483 DOI: 10.1007/s12268-015-0609-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peter T Witkowski
- Institut für Medizinische Virologie, Helmut-Ruska-Haus, Charité-Universitätsmedizin Berlin, Helmut-Ruska-Haus Charitéplatz 1, D-10117 Berlin, Germany
| | - Patrick Heinemann
- Institut für Medizinische Virologie, Helmut-Ruska-Haus, Charité-Universitätsmedizin Berlin, Helmut-Ruska-Haus Charitéplatz 1, D-10117 Berlin, Germany
| | - Boris Klempa
- Institut für Medizinische Virologie, Helmut-Ruska-Haus, Charité-Universitätsmedizin Berlin, Helmut-Ruska-Haus Charitéplatz 1, D-10117 Berlin, Germany
| | - Detlev H Krüger
- Institut für Medizinische Virologie, Helmut-Ruska-Haus, Charité-Universitätsmedizin Berlin, Helmut-Ruska-Haus Charitéplatz 1, D-10117 Berlin, Germany
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